CARY, N.C., USA (October 5, 2005)

Dialog, a Thomson business, announced today that it is now offering Alerts subscriptions to the highly valued CSA research databases for its customers in the corporate and government markets.

Dialog is the only content aggregator providing access to the CSA Technology Research Database, and Alerts subscriptions to that database (File 23) are available immediately. Alerts subscriptions for the more than 30 databases of CSA scientific and technical research being added to Dialog will be available in upcoming months. The CSA databases being added cover research in the fields of aeronautics, astronautics, engineering, environmental sciences, life sciences, materials, metals and alloys, space sciences, social/library sciences and technology, among others.

The new Alerts subscriptions will allow Dialog customers to receive e-mail notifications when relevant new CSA research is added to the Dialog® online service. The content provided by CSA is used worldwide by researchers, engineers, information professionals and others in a broad array of industries and scientific, medical and technical fields.

“We are committed to helping our customers maximize the value of the content provided by Dialog, within the context of their budget and organizational needs,” said Viji Krishnan, Dialog vice president, publisher management. “For those customers who place an emphasis on current awareness, Alerts offer an efficient strategy for research management.”

As part of the CSA Alerts subscription, trained information specialists in the Dialog Alerts Bureau will develop a search strategy for customers to precisely match their research-monitoring needs.

In addition to Alerts, Dialog also facilitates access to electronic journal subscriptions, provides links to related materials, and offers a broad selection of custom report templates through its DialogLink 5 software. Searchers can use these templates to quickly transform their research into professionally formatted reports for distribution to decision makers and others in their organizations.

To learn more about CSA Alert subscriptions on Dialog, please contact us.

-End-

About The Thomson Corporation
The Thomson Corporation ( www.thomson.com ), with 2004 revenues of $8.10 billion, is a global leader in providing integrated information solutions to business and professional customers. Thomson provides value-added information, software tools, and applications to more than 20 million users in the fields of scientific research, healthcare, law, tax, accounting, financial services, higher education, reference information, and corporate e-learning and assessment. With operational headquarters in Stamford, Conn., Thomson has approximately 40,000 employees and provides services in approximately 130 countries. The Corporation's common shares are listed on the New York and Toronto stock exchanges (TSX: TOC; NYSE: TOC).

-30-

All designated trademarks used herein are the property of The Thomson Corporation or its subsidiaries. Registered marks are registered by The Thomson Corporation or its subsidiaries with the U.S. Patent and Trademark Office. All other marks are trademarks or registered trademarks of their respective owners.

top